Fig. 3: Electrochemical testing in non-aqueous Li-ion capacitor configuration. | Nature Communications

Fig. 3: Electrochemical testing in non-aqueous Li-ion capacitor configuration.

From: Heterogeneous intercalated metal-organic framework active materials for fast-charging non-aqueous Li-ion capacitors

Fig. 3

a, b Design of an asymmetric capacitor with activated carbon (AC) positive electrode and range of capacity utilization due to internal resistance in SD-NPB(762202) (a) and SD-Bph (b) negative electrodes with pre-lithiated treatment at 20 °C. c, d Initial charge–discharge curves (c), I–V resistance at 0.15 mA cm−2 (d) at 20 °C. The I–V resistances were calculated as the difference between the average voltage of charge and discharge divided by the applied current. Error bars represent standard deviation. e, f Capacity retention after 1000 cycles at 20 °C and 1 mA cm−2 (e), and capacity retention at 0.15 mA cm−2 at 20 °C after storage at 60 °C (f) for each cell.

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